Microstructure formation of porous silicon carbide ceramics during β-α phase transformation

被引：6
|
作者：
Lee, EunJu [1 ]
Lee, MiSa [1 ]
Shim, Jiin [1 ,2 ]
Min, Kyugseok [1 ,2 ]
Kim, Deug J. [1 ]
机构：
[1] Sungkyunkwan Univ, 2056 Seobu Ro, Suwon 16419, Gyeonggi Do, South Korea
[2] LG Innotek, Ansan, Gyeonggi Do, South Korea
来源：
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2017年 / 65卷
基金：
新加坡国家研究基金会;
关键词：
SiC; Porous ceramic; Grain growth; Phase transformation;
D O I：
10.1016/j.ijrmhm.2016.11.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of particle size and initial powder phase on the microstructure of porous SiC ceramics was investigated. When beta-SiC powder was used as a starting material, porous SiC ceramics were formed by rapid grain growth of alpha-SiC during the beta-alpha phase transformation. As the particle size of the initial powders decreased, (beta-alpha SiC phase transformation and rapid grain growth of alpha-SiC occurred earlier. Grain and pore size of SiC porous ceramics can be controlled by the addition of alpha-SiC seed. Grain and pore size decreased as the concentration of alpha-SiC seed increased. The bending strength of porous SiC ceramics did not depend on pore size. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：64 / 68
页数：5
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